3D-Printed frequency-scanned slot array in grating waveguide
Entity
UAM. Departamento de Tecnología Electrónica y de las ComunicacionesPublisher
ElsevierDate
2021-06-18Citation
10.1016/j.aeue.2021.153866
International Journal of Electronics and Communications (AEÜ) 138 (2021): 153866
ISSN
1434-8411DOI
10.1016/j.aeue.2021.153866Funded by
This work was supported by the Spanish Government under grant TEC2016-76070-C3-1-R (Agencia Estatal de Investigación, Fondo Europeo de Desarrollo Regional: AEI/FEDER, UE)Project
Gobierno de España. TEC2016-76070-C3-1-REditor's Version
https://doi.org/10.1016/j.aeue.2021.153866Subjects
Corrugated waveguides; Gratings; Layered manufacturing; Linear antenna arrays; Slot antennas; InformáticaRights
© 2021 by the authors
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
In this work, a linearly-polarized frequency-scanned slot-antenna linear array fed by a travelling wave in grating waveguide is designed at 17 GHz. Additionally, the insertion of periodic gratings in the bottom broad-wall of the feeding waveguide reduces the guided wavelength of the fundamental propagating mode. Therefore, steering angles around broadside can be attained in the radiation pattern, contrary to conventional travelling-wave designs where grating lobes would inevitably appear. Furthermore, tuning posts are included in the radiating element design to mitigate the mismatch provoked by uniform phase feeding. A 16-element array is fabricated to validate the design, which experimentally shows a continuous angular scanning range of ±10°around broadside in the band from 16 to 18 GHz, with a peak gain of 18 dBi and a maximum gain drop of 4 dB
Files in this item
Google Scholar:Garcia-Marin, Eduardo
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Masa Campos, José Luis
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Sanchez-Olivares, Pablo
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Guilarte-Bellod, Beatriz
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